Amazon.com : Synergy Digital Camera Battery, Compatible with Canon EOS 40D Digital Camera Battery Lithium-Ion (1500 mAh) - Replacement for Canon BP-511 Battery : Electronics
Canon EOS 40D Battery Replacement - iFixit Repair Guide
Canon EOS 40D Date and Time Battery Replacement - iFixit Repair Guide
Batérie Do Fotoaparátov – Stránka 5 – EnergyBOSS.sk